Apparatus for impregnating timbers.



J. L. W. NEBLH; APPARATUS FOR IMPREGNATING TIMBERS.

APPLICATION FILED FEB. 9, 1914.

1,132,025, Patented Mar.16, 1915.

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Fig. 2. -40 1 1.2 lllllllllllllllll 45 f j V 1 & Q5 6 a 9 5/ EEZZWitnesses. Inventor M1, 4 110% flZX WQJM q y C92 [62 J. L. W. NEBLE.APPARATUS FOR IMPRBGNATING TIMBEBS. APPLICATION FILED FEB,9,1914.

Patented Mar. 16, 1915.

In entor W WM \PnaM/( Jaw/ b i .q/

A rney W itnessea JOHN-L. wt NEBLE, OF EVE BETT, WASH INGTON.

APIARXTUS FOR IMPREGN'ATING TIMBERS.

Speciflcation'of Lettersratent.

I Patented Mar. 16. 191' 5- Applicatiomflleiile'bruany 9, 1914.=Seria1-No. 817,447.

cally operated.

The purpose (for which the device'is to be used is to impregnate timberswith such chemicals as will serve "to better preserve them-againstdecay, and the-destructive effeet-s ofanimal organisms, such forinstance, as teredos.

My inventioncomprises certain parts-and combinations of parts which willbe hereinafter defined and particularly pointed out in the claims.

In the accompanying drawings I have shown my invention in -a simple formof construction which is-now ipreferred by me.

Figure l shows, in :plan, apparatus used for simultaneous handling of anumber of logs. Fig. 2 is'adetailof apparatus shown as applied to a'log,-'.the ond of the logalso being showninsection. Fig.3 lS'B/VlQW ofa pair of the anchor yokes employed. Fig. 415 an inner, face view of thecap member.

The :processemployed me in impregnating timbers, consists in inclosingithe major portion of the endofthe illog, preferably the butt-end, witha cap which has a tight or sealed contact with the log, and supplyingthe impregnating :liquid under pressure to this end of the log, b whichprocess I have found that the liqui will be driven through the pores ofthe log lengthwise thereof, until, if the process is sufiicientlycontinued, it will exude at the opposite end. The process may becontinued to such a point as to impregnate a portion only of the lengthof the log, or the entire lengt if desired.

In Fig. 1, I have shown a main supply pipe or header, 7 from which aseries of discharge pipes extends. I have also shown each of thesedischarge pipes 70, as provided with a Y at its outer end, each" branchof I which is provided" with a valve 71 and with a flexible hose 72connected therewith. The

other end of this hose connects with a dis charge pipe 3 which may bebonnected up to supply the impregnating liquid to the end of the. log inthe following manner.

For each log or timber to be treated, I provide a cap member 1, which isshown in face view in Fig. 4. This cap member is provided with a recess10 upon its inner surface, which receives a disk 2 of wood. also preferto use another disk 20 of wood, which contacts with the inner face ofthe disk 2 and also with the inner surface of the oap 1. I prefer thatthese two disks 2 and-20 be placed with the grain extending at rightangles so that there will be less liability of a crack occurring in sucha way as to Sproduce a leak. Through both of these di 5 a hole is boredof such size as to fit tightly against the pipe 3, to tlIereby preventback flow of the impregnating fluid. The end of this pipe shouldterminate before making-contact with the end face of the log.

To accommodate the pipe 3,. the cap 1, which is made of iron or othersuitable metal, is provided with a central hole 11, which isconsiderably larger than the pipe. The cap is also provided with twooppos te cars 12, each provided with a fifdially extending slot 13, forthe reception of the tensionbolts 5. Between the inner disk 20 and theend of the log and extending closely about the outer edge of the endface thereof, is a ring 21 of packing material, so that when pressure isapplied to draw the cap 1 against th log, a tight joint will be formedand at the same time a shallow chamber is formed which coverssubstantially the end of'the log, and which receives the impregnatingliquid from the pipe 3, under pressure.

At some distance in from the end of the log, is secured means by whichthe tension bolts 5 may be anchored or held. This means, as hereinshown, consists of a couple of yokes, the construction of which is shownin Fig. 3. These yokes each consist of a half ring 4, provided with lugsor cars 43, thro gh which clamping bolts 44 may be passed to draw themclosely together. They are lso provided with cars 40, preferably loca edat 90 from the lugs 43, and provided with radial slots 41 through whichthe ends of the bolts 5 ayi'bepassed; These yokes are also providegwithspyrs o'r teeth, which are intended to log and moria thoroughlysecure-.fthetyolres' in place thereon. One or more of these spurs, asthe with the log,

spurs 42, which .extend substantially parallel with the direction of thebolts 14-, may be made integral with the yokes. The other spurs may,however, be made separate and be made to pass'through holes 46 in theyokes'and be driven into place.

With the anchor yokes secured in place, by means of the threaded bolts 5the cap 1 may be held against the end face of the log with great force.With the pipe 3 in place and pressure from the header applied by openingthe valve'71, the fluid will be discharged into the chamber 30 whence itwill slowly enter the fibers of the wood. As the cap seals one end ofthe log, the fluid will tend to be driven toward the other end of thelog, as it will flow lengthwise the grain much more readily thantransversely thereof. It will also penetrate the sap wood which liesnext the bark much more readily than the inner hard wood, which resultsin the impregnation of an inclosing layer which forms a protectivesheath for the heart wood. By this means the log may be impregnated forany'length desired.

The apparatus is of a simple character, requiring is very simple tohandle.

I claim as my invention- 1. An apparatus for impregnating timbersconsisting of a plate or cap having two opposite ears each rovided witha radially. extending slot, said plate having a central pipe-receivingopening and a recessed chamber surrounding said opening on the innerface of the plate, a wood disk filling said recess, a second wood diskcovering substantially the inner face of the plate, both said disksbeing centrally bored for the passage of the supply pipe, a ring ofpackin material extending closely about the go of the end of the log toform a sealing contact and provide a shallow chamber to holdimpregnating liquid; semicircular yokes provided. with inwardlyprojecting spurs in-v tegral therewith for anchoring engagement utlittle expense in first cost, and

clamping bolts connecting the ends of said yokes so as to draw them to=gether and to fixedly secure the yokes about the timber back from itsend, said yokes also having slotted outwardly projecting earscorresponding to those upon the cap or plate, and tension bolts fittingsaid slotted ears of yokes and cap whereby the cap may be firmly heldagainst the end of the log while latter is belng impregnated.

2. An apparatus for impregnating timbers consisting of a plate or caphaving two opposite ears each provided with a radially extending slot,said plate having a central pipe-receiving opening and a recessedchamber surroundinksaid opening on the inner face of the platei a wooddisk filling said recess, a second wood disk covering substantially theinner face of the plate with its grain at right angles to grain of otherdisk,

both said disks being centrally bored for the passage of the supplypipe, a ring of packmg material extending closely about the edge of theend of the log to form a sealing contact and provide a shallow chamberto hold impregnating fluid; semicircular yokes provided with inwardlyprojecting spurs integral therewith for anchoring engagement with thelog, clamping bolts connecting the ends of said yokes so as to draw themtogether and fixedly secure the yokes about the timber back from itsend, said yokes also having slotted outwardly projecting earscorresponding to those on the cap or plate, tension bolts fitting saidslotted ears of yokes and cap whereby the cap may be firmly held againstthe end of the log while latter is beingimpregnated, anda supply ipeassing through theholes in the woo dis s to discharge the im regnatingfluid under Witnesses S. J PRrronARn, H. GUNHUs.

pressure into the c amber between the cap and the end-of the log.

JOHN L. w. NEBLE.

